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The promise of multi-messenger astronomy relies on the rapid detection of gravitational waves at very low latencies ($\mathcal{O}$(1\,s)) in order to maximize the amount of time available for follow-up observations. In recent years,…

We use a self-consistent Monte Carlo treatment of stellar dynamics to investigate black hole binaries that are dynamically ejected from globular clusters to determine if they will be gravitational wave sources. We find that many of the…

Astrophysics of Galaxies · Physics 2015-05-19 J. M. B. Downing , M. J. Benacquista , M. Giersz , R. Spurzem

Gravitational waves (GWs) from coalescing binary black holes (BBHs) can come from different environments. GWs interact gravitationally with astrophysical objects, which makes it possible to use gravitational lensing by objects in the same…

High Energy Astrophysical Phenomena · Physics 2025-10-16 Helena Ubach , Mark Gieles , Jordi Miralda-Escudé

Next-generation ground-based gravitational-wave detectors, such as Cosmic Explorer (CE), are expected to be sensitive to gravitational-wave signals with frequencies as low as 5 Hz, allowing signals to spend a significant amount of time in…

High Energy Astrophysical Phenomena · Physics 2023-08-25 Pratyusava Baral , Soichiro Morisaki , Ignacio Magaña Hernandez , Jolien D. E. Creighton

We model the inspiral of globular clusters (GCs) towards a galactic nucleus harboring a supermassive black hole (SMBH), a leading scenario for the formation of nuclear star clusters. We consider the case of GCs containing either an…

Astrophysics of Galaxies · Physics 2018-04-18 Manuel Arca Sedda , Alessia Gualandris

Gravitational Wave (GW) astronomy promises to observe different kinds of astrophysical sources. Here we explore the possibility of detection of GWs from hyperbolic interactions of compact stars with ground-based interferometric detectors.…

General Relativity and Quantum Cosmology · Physics 2021-10-29 Sajal Mukherjee , Sanjit Mitra , Sourav Chatterjee

Space-based gravitational wave (GW) detectors will open the millihertz band to survey ultra-compact binaries (UCBs). \textit{Verification binaries} (VBs) is a key to verifying the performance of space-based GW detectors because its…

General Relativity and Quantum Cosmology · Physics 2026-03-03 Zi-Heng Yu , Sen Yang , Liangliang Ren , Shun-Jia Huang

Gravitational waves (GWs) have a great potential to probe cosmology. We review early universe sources that can lead to cosmological backgrounds of GWs. We begin by presenting definitions of GWs in flat space-time and in a cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-23 Chiara Caprini , Daniel G. Figueroa

The Gravitational Wave (GW) universe contains a wealth of sources which, with the proper treatment, will open up the universe as never before. By observing massive black hole binaries to high redshifts, we should begin to explore the…

General Relativity and Quantum Cosmology · Physics 2015-06-22 Edward K. Porter

Massive black hole binary coalescences are prime targets for space-based gravitational wave (GW) observatories such as {\it LISA}. GW measurements can localize the position of a coalescing binary on the sky to an ellipse with a major axis…

Astrophysics · Physics 2008-05-28 Ryan N. Lang , Scott A. Hughes

The advent of gravitational-wave astronomy is now allowing for the study of compact binary merger demographics throughout the Universe. This information can be leveraged as tools for understanding massive stars, their environments, and…

High Energy Astrophysical Phenomena · Physics 2024-04-12 Kevin Turbang , Max Lalleman , Thomas A. Callister , Nick van Remortel

Ground-based gravitational wave detectors are sensitive to a narrow range of frequencies, effectively taking a snapshot of merging compact-object binary dynamics just before merger. We demonstrate that by adopting analysis parameters that…

General Relativity and Quantum Cosmology · Physics 2014-10-01 Benjamin Farr , Evan Ochsner , Will M. Farr , Richard O'Shaughnessy

We present the astrophysical science case for a space-based, decihertz gravitational-wave (GW) detector. We particularly highlight an ability to infer a source's sky location, both when combined with a network of ground-based detectors to…

General Relativity and Quantum Cosmology · Physics 2020-08-12 Kevin A. Kuns , Hang Yu , Yanbei Chen , Rana X Adhikari

Electromagnetic (EM) follow-up of gravitational wave (GW) candidates is important for verifying their astrophysical nature and studying their physical properties. While the next generation of GW detectors will have improved sensitivities to…

High Energy Astrophysical Phenomena · Physics 2014-05-27 L. Feng , R. Vaulin , J. N. Hewitt

LIGO and Virgo have initiated the era of gravitational-wave (GW) astronomy; but in order to fully explore GW frequency spectrum, we must turn our attention to innovative techniques for GW detection. One such approach is to use binary…

General Relativity and Quantum Cosmology · Physics 2022-03-14 Diego Blas , Alexander C. Jenkins

The stochastic gravitational wave background from compact binary coalescences is expected to be the first detectable stochastic signal via cross-correlation searches with terrestrial detectors. It encodes the cumulative merger history of…

General Relativity and Quantum Cosmology · Physics 2026-02-17 Michael Ebersold , Tania Regimbau

It is thought that a stochastic background of gravitational waves was produced during the formation of the universe. A great deal could be learned by measuring this Cosmic Gravitational-wave Background (CGB), but detecting the CGB presents…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Neil J. Cornish , Shane L. Larson

Gravitational waves (GWs) from the compact binary coalescence provide direct measurement of the luminosity distance to the event. However, unlike binary neutron stars, redshift information is not available from GW observations of binary…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-03 Tathagata Ghosh , Surhud More

Despite the observation of nearly 100 compact binary coalescence (CBC) events up to the end of the Advanced gravitational-wave (GW) detectors' third observing run (O3), there remain fundamental open questions regarding their astrophysical…

General Relativity and Quantum Cosmology · Physics 2025-01-22 Ana Lorenzo-Medina , Thomas Dent

The stochastic cosmological gravitational-wave background (CGWB) provides a direct window to study early universe phenomena and fundamental physics. With the proposed third-generation ground-based gravitational wave detectors, Einstein…

General Relativity and Quantum Cosmology · Physics 2020-09-16 Ashish Sharma , Jan Harms